tests/lib_2/html/debugger_test.dart - sdk - Git at Google

 /// Debugger custom formatter tests.
 /// If the tests fail, paste the expected output into the [expectedGolden]
 /// string literal in this file and audit the diff to ensure changes are
 /// expected.
 ///
 /// Currently only DDC supports debugging objects with custom formatters
 /// but it is reasonable to add support to Dart2JS in the future.
 @JS()
 library debugger_test;

 import 'dart:html';
 import 'package:js/js.dart';
 import 'package:js/js_util.dart' as js_util;

 import 'package:expect/minitest.dart';

 import 'dart:_debugger' as _debugger;

 class TestClass {
   String name = 'test class';
   int date;
   static List<int> foo = [1, 2, 3, 4];
   static String greeting = 'Hello world';
   static Object bar = new Object();

   static exampleStaticMethod(x) => x * 2;

   TestClass(this.date);

   String nameAndDate() => '$name on day $date';

   int last(List<int> list) => list.last;

   void addOne(String name) {
     name = '${name}1';
   }

   get someInt => 42;
   get someString => "Hello world";
   get someObject => this;

   Object returnObject() => bar;
 }

 class TestGenericClass<X, Y> {
   TestGenericClass(this.x);
   X x;
 }

 @JS('Object.getOwnPropertyNames')
 external List getOwnPropertyNames(obj);

 @JS('devtoolsFormatters')
 external List get _devtoolsFormatters;
 List get devtoolsFormatters => _devtoolsFormatters;

 @JS('JSON.stringify')
 external stringify(value, [Function replacer, int space]);

 // TODO(jacobr): this is only valid if the legacy library loader is used.
 // We need a solution that works with all library loaders.
 @JS('dart_library.import')
 external importDartLibrary(String path);

 @JS('ExampleJSClass')
 class ExampleJSClass<T> {
   external factory ExampleJSClass(T x);
   external T get x;
 }

 // Replacer normalizes file names that could vary depending on the test runner.
 // styles.
 replacer(String key, value) {
   // The values for keys with name 'object' may be arbitrary Dart nested
   // Objects so are not safe to stringify.
   if (key == 'object') return '<OBJECT>';
   if (value is String) {
     if (value.contains('dart_sdk.js')) return '<DART_SDK>';
     if (new RegExp(r'[.](js|dart|html)').hasMatch(value)) return '<FILE>';
   }
   return value;
 }

 String format(value) {
   // Avoid double-escaping strings.
   if (value is String) return value;
   return stringify(value, replacer, 4);
 }

 class FormattedObject {
   FormattedObject(this.object, this.config);

   Object object;
   Object config;
 }

 /// Extract all object tags from a json ml expression to enable
 /// calling the custom formatter on the extracted object tag.
 List<FormattedObject> extractNestedFormattedObjects(json) {
   var ret = <FormattedObject>[];
   if (json is String || json is bool || json is num) return ret;
   if (json is List) {
     for (var e in json) {
       ret.addAll(extractNestedFormattedObjects(e));
     }
     return ret;
   }

   for (var name in getOwnPropertyNames(json)) {
     if (name == 'object') {
       // Found a nested formatted object.
       ret.add(new FormattedObject(js_util.getProperty(json, 'object'),
           js_util.getProperty(json, 'config')));
       return ret;
     }
     ret.addAll(extractNestedFormattedObjects(js_util.getProperty(json, name)));
   }
   return ret;
 }

 main() async {
   if (devtoolsFormatters == null) {
     print("Warning: no devtools custom formatters specified. Skipping tests.");
     return;
   }

   // Cache blocker is a workaround for:
   // https://code.google.com/p/dart/issues/detail?id=11834
   var cacheBlocker = new DateTime.now().millisecondsSinceEpoch;
   var goldenUrl = '/root_dart/tests/lib_2/html/debugger_test_golden.txt'
       '?cacheBlock=$cacheBlocker';

   String golden;
   try {
     golden = (await HttpRequest.getString(goldenUrl)).trim();
   } catch (e) {
     print("Warning: couldn't load golden file from $goldenUrl");
   }

   document.body.append(new ScriptElement()
     ..type = 'text/javascript'
     ..innerHtml = r"""
 window.ExampleJSClass = function ExampleJSClass(x) {
   this.x = x;
 };
 """);

   var _devtoolsFormatter = devtoolsFormatters.first;

   var actual = new StringBuffer();

   // Accumulate the entire expected custom formatted data as a single
   // massive string buffer so it is simple to update expectations when
   // modifying the formatting code.
   // Otherwise a small formatting change would result in tweaking lots
   // of expectations.
   // The verify golden match test cases does the final comparison of golden
   // to expected output.
   addGolden(String name, value) {
     actual.write('Test: $name\n'
         'Value:\n'
         '${format(value)}\n'
         '-----------------------------------\n');
   }

   addFormatterGoldens(String name, object, [config]) {
     addGolden(
         '$name formatting header', _devtoolsFormatter.header(object, config));
     addGolden('$name formatting body', _devtoolsFormatter.body(object, config));
   }

   // Include goldens for the nested [[class]] definition field.
   addNestedFormatterGoldens(String name, obj) {
     addGolden('$name instance header', _devtoolsFormatter.header(obj, null));
     var body = _devtoolsFormatter.body(obj, null);
     addGolden('$name instance body', body);

     var nestedObjects = extractNestedFormattedObjects(body);
     var clazz = nestedObjects.last;
     // By convention assume last nested object is the [[class]] definition
     // describing the object's static members and inheritance hierarchy
     addFormatterGoldens('$name definition', clazz.object, clazz.config);
   }

   // Include goldens for the nested [[class]] definition field.
   addAllNestedFormatterGoldens(String name, obj) {
     addGolden('$name header', _devtoolsFormatter.header(obj, null));
     var body = _devtoolsFormatter.body(obj, null);
     addGolden('$name body', body);

     var nestedObjects = extractNestedFormattedObjects(body);
     var i = 0;
     for (var nested in nestedObjects) {
       addFormatterGoldens('$name child $i', nested.object, nested.config);
       i++;
     }
   }

   group('Iterable formatting', () {
     var list = ['foo', 'bar', 'baz'];
     var iterable = list.map((x) => x * 5);
     addFormatterGoldens('List<String>', list);

     var listOfObjects = <Object>[42, 'bar', true];

     addNestedFormatterGoldens('List<Object>', listOfObjects);

     var largeList = <int>[];
     for (var i = 0; i < 200; ++i) {
       largeList.add(i * 10);
     }
     addNestedFormatterGoldens('List<int> large', largeList);

     addNestedFormatterGoldens('Iterable', iterable);

     var s = new Set()..add("foo")..add(42)..add(true);
     addNestedFormatterGoldens('Set', s);
   });

   group('Map formatting', () {
     Map<String, int> foo = new Map();
     foo = {'1': 2, 'x': 4, '5': 6};

     addFormatterGoldens('Map<String, int>', foo);
     test('hasBody', () {
       expect(_devtoolsFormatter.hasBody(foo, null), isTrue);
     });

     Map<dynamic, dynamic> dynamicMap = new Map();
     dynamicMap = {1: 2, 'x': 4, true: "truthy"};

     addNestedFormatterGoldens('Map<dynamic, dynamic>', dynamicMap);
   });

   group('Function formatting', () {
     adder(int a, int b) => a + b;

     addFormatterGoldens('Function', adder);

     test('hasBody', () {
       expect(_devtoolsFormatter.hasBody(adder, null), isTrue);
     });

     addEventListener(String name, bool callback(Event e)) => null;

     addFormatterGoldens('Function with functon arguments', addEventListener);

     // Closure
     addGolden('dart:html method', window.addEventListener);

     // Get a reference to the JS constructor for a Dart class.
     // This tracks a regression bug where overly verbose and confusing output
     // was shown for this case.
     var testClass = new TestClass(17);
     var dartConstructor = js_util.getProperty(
         js_util.getProperty(testClass, '__proto__'), 'constructor');
     addFormatterGoldens('Raw reference to dart constructor', dartConstructor);
   });

   group('Object formatting', () {
     var object = new Object();
     addFormatterGoldens('Object', object);
     test('hasBody', () {
       expect(_devtoolsFormatter.hasBody(object, null), isTrue);
     });
   });

   group('Type formatting', () {
     addFormatterGoldens('Type TestClass', TestClass);
     addFormatterGoldens('Type HttpRequest', HttpRequest);
   });

   group('JS interop object formatting', () {
     var object = js_util.newObject();
     js_util.setProperty(object, 'foo', 'bar');
     // Make sure we don't apply the Dart custom formatter to JS interop objects.
     expect(_devtoolsFormatter.header(object, null), isNull);
   });

   group('Module formatting', () {
     var moduleNames = _debugger.getModuleNames();
     var testModuleName = "tests_lib_2_html_debugger_test/debugger_test";
     expect(moduleNames.contains(testModuleName), isTrue);

     addAllNestedFormatterGoldens(
         'Test library Module', _debugger.getModuleLibraries(testModuleName));
   });

   group('StackTrace formatting', () {
     StackTrace stack;
     try {
       throw new Error();
     } catch (exception, stackTrace) {
       stack = stackTrace;
     }
     addFormatterGoldens('StackTrace', stack);
     test('hasBody', () {
       expect(_devtoolsFormatter.hasBody(stack, null), isTrue);
     });
   });

   group('Class formatting', () {
     addNestedFormatterGoldens('TestClass', new TestClass(17));
     addNestedFormatterGoldens('MouseEvent', new MouseEvent("click"));
     // This is a good class to test as it has statics and a deep inheritance hierarchy
     addNestedFormatterGoldens('HttpRequest', new HttpRequest());
   });

   group('Generics formatting', () {
     addNestedFormatterGoldens(
         'TestGenericClass', new TestGenericClass<int, List>(42));
     addNestedFormatterGoldens(
         'TestGenericClassJSInterop',
         new TestGenericClass<ExampleJSClass<String>, int>(
             new ExampleJSClass("Hello")));
   });

   test('verify golden match', () {
     // Warning: all other test groups must have run for this test to be meaningful
     var actualStr = actual.toString().trim();

     if (actualStr != golden) {
       var helpMessage =
           'Debugger output does not match the golden data found in:\n'
           'tests/lib_2/html/debugger_test_golden.txt\n'
           'The new golden data is copied to the clipboard when you click on '
           'this window.\n'
           'Please update the golden file with the following output and review '
           'the diff using your favorite diff tool to make sure the custom '
           'formatting output has not regressed.';
       print(helpMessage);
       print(actualStr);
       // Copy text to clipboard on page click. We can't copy to the clipboard
       // without a click due to Chrome security.
       var body = document.body;
       TextAreaElement textField = new Element.tag('textarea');
       textField.maxLength = 100000000;
       textField.text = actualStr;
       textField.style
         ..width = '800px'
         ..height = '400px';
       document.body.append(new Element.tag('h3')
         ..innerHtml = helpMessage.replaceAll('\n', '<br>'));
       document.body.append(textField);
       document.body.onClick.listen((_) {
         textField.select();
         var result = document.execCommand('copy');
         if (result) {
           print("Copy to clipboard successful");
         } else {
           print("Copy to clipboard failed");
         }
       });
     }
     expect(actualStr == golden, isTrue);
   });
 }
	/// Debugger custom formatter tests.
	/// If the tests fail, paste the expected output into the [expectedGolden]
	/// string literal in this file and audit the diff to ensure changes are
	/// expected.
	///
	/// Currently only DDC supports debugging objects with custom formatters
	/// but it is reasonable to add support to Dart2JS in the future.
	@JS()
	library debugger_test;

	import 'dart:html';
	import 'package:js/js.dart';
	import 'package:js/js_util.dart' as js_util;

	import 'package:expect/minitest.dart';

	import 'dart:_debugger' as _debugger;

	class TestClass {
	String name = 'test class';
	int date;
	static List<int> foo = [1, 2, 3, 4];
	static String greeting = 'Hello world';
	static Object bar = new Object();

	static exampleStaticMethod(x) => x * 2;

	TestClass(this.date);

	String nameAndDate() => '$name on day $date';

	int last(List<int> list) => list.last;

	void addOne(String name) {
	name = '${name}1';
	}

	get someInt => 42;
	get someString => "Hello world";
	get someObject => this;

	Object returnObject() => bar;
	}

	class TestGenericClass<X, Y> {
	TestGenericClass(this.x);
	X x;
	}

	@JS('Object.getOwnPropertyNames')
	external List getOwnPropertyNames(obj);

	@JS('devtoolsFormatters')
	external List get _devtoolsFormatters;
	List get devtoolsFormatters => _devtoolsFormatters;

	@JS('JSON.stringify')
	external stringify(value, [Function replacer, int space]);

	// TODO(jacobr): this is only valid if the legacy library loader is used.
	// We need a solution that works with all library loaders.
	@JS('dart_library.import')
	external importDartLibrary(String path);

	@JS('ExampleJSClass')
	class ExampleJSClass<T> {
	external factory ExampleJSClass(T x);
	external T get x;
	}

	// Replacer normalizes file names that could vary depending on the test runner.
	// styles.
	replacer(String key, value) {
	// The values for keys with name 'object' may be arbitrary Dart nested
	// Objects so are not safe to stringify.
	if (key == 'object') return '<OBJECT>';
	if (value is String) {
	if (value.contains('dart_sdk.js')) return '<DART_SDK>';
	if (new RegExp(r'[.](js\|dart\|html)').hasMatch(value)) return '<FILE>';
	}
	return value;
	}

	String format(value) {
	// Avoid double-escaping strings.
	if (value is String) return value;
	return stringify(value, replacer, 4);
	}

	class FormattedObject {
	FormattedObject(this.object, this.config);

	Object object;
	Object config;
	}

	/// Extract all object tags from a json ml expression to enable
	/// calling the custom formatter on the extracted object tag.
	List<FormattedObject> extractNestedFormattedObjects(json) {
	var ret = <FormattedObject>[];
	if (json is String \|\| json is bool \|\| json is num) return ret;
	if (json is List) {
	for (var e in json) {
	ret.addAll(extractNestedFormattedObjects(e));
	}
	return ret;
	}

	for (var name in getOwnPropertyNames(json)) {
	if (name == 'object') {
	// Found a nested formatted object.
	ret.add(new FormattedObject(js_util.getProperty(json, 'object'),
	js_util.getProperty(json, 'config')));
	return ret;
	}
	ret.addAll(extractNestedFormattedObjects(js_util.getProperty(json, name)));
	}
	return ret;
	}

	main() async {
	if (devtoolsFormatters == null) {
	print("Warning: no devtools custom formatters specified. Skipping tests.");
	return;
	}

	// Cache blocker is a workaround for:
	// https://code.google.com/p/dart/issues/detail?id=11834
	var cacheBlocker = new DateTime.now().millisecondsSinceEpoch;
	var goldenUrl = '/root_dart/tests/lib_2/html/debugger_test_golden.txt'
	'?cacheBlock=$cacheBlocker';

	String golden;
	try {
	golden = (await HttpRequest.getString(goldenUrl)).trim();
	} catch (e) {
	print("Warning: couldn't load golden file from $goldenUrl");
	}

	document.body.append(new ScriptElement()
	..type = 'text/javascript'
	..innerHtml = r"""
	window.ExampleJSClass = function ExampleJSClass(x) {
	this.x = x;
	};
	""");

	var _devtoolsFormatter = devtoolsFormatters.first;

	var actual = new StringBuffer();

	// Accumulate the entire expected custom formatted data as a single
	// massive string buffer so it is simple to update expectations when
	// modifying the formatting code.
	// Otherwise a small formatting change would result in tweaking lots
	// of expectations.
	// The verify golden match test cases does the final comparison of golden
	// to expected output.
	addGolden(String name, value) {
	actual.write('Test: $name\n'
	'Value:\n'
	'${format(value)}\n'
	'-----------------------------------\n');
	}

	addFormatterGoldens(String name, object, [config]) {
	addGolden(
	'$name formatting header', _devtoolsFormatter.header(object, config));
	addGolden('$name formatting body', _devtoolsFormatter.body(object, config));
	}

	// Include goldens for the nested [[class]] definition field.
	addNestedFormatterGoldens(String name, obj) {
	addGolden('$name instance header', _devtoolsFormatter.header(obj, null));
	var body = _devtoolsFormatter.body(obj, null);
	addGolden('$name instance body', body);

	var nestedObjects = extractNestedFormattedObjects(body);
	var clazz = nestedObjects.last;
	// By convention assume last nested object is the [[class]] definition
	// describing the object's static members and inheritance hierarchy
	addFormatterGoldens('$name definition', clazz.object, clazz.config);
	}

	// Include goldens for the nested [[class]] definition field.
	addAllNestedFormatterGoldens(String name, obj) {
	addGolden('$name header', _devtoolsFormatter.header(obj, null));
	var body = _devtoolsFormatter.body(obj, null);
	addGolden('$name body', body);

	var nestedObjects = extractNestedFormattedObjects(body);
	var i = 0;
	for (var nested in nestedObjects) {
	addFormatterGoldens('$name child $i', nested.object, nested.config);
	i++;
	}
	}

	group('Iterable formatting', () {
	var list = ['foo', 'bar', 'baz'];
	var iterable = list.map((x) => x * 5);
	addFormatterGoldens('List<String>', list);

	var listOfObjects = <Object>[42, 'bar', true];

	addNestedFormatterGoldens('List<Object>', listOfObjects);

	var largeList = <int>[];
	for (var i = 0; i < 200; ++i) {
	largeList.add(i * 10);
	}
	addNestedFormatterGoldens('List<int> large', largeList);

	addNestedFormatterGoldens('Iterable', iterable);

	var s = new Set()..add("foo")..add(42)..add(true);
	addNestedFormatterGoldens('Set', s);
	});

	group('Map formatting', () {
	Map<String, int> foo = new Map();
	foo = {'1': 2, 'x': 4, '5': 6};

	addFormatterGoldens('Map<String, int>', foo);
	test('hasBody', () {
	expect(_devtoolsFormatter.hasBody(foo, null), isTrue);
	});

	Map<dynamic, dynamic> dynamicMap = new Map();
	dynamicMap = {1: 2, 'x': 4, true: "truthy"};

	addNestedFormatterGoldens('Map<dynamic, dynamic>', dynamicMap);
	});

	group('Function formatting', () {
	adder(int a, int b) => a + b;

	addFormatterGoldens('Function', adder);

	test('hasBody', () {
	expect(_devtoolsFormatter.hasBody(adder, null), isTrue);
	});

	addEventListener(String name, bool callback(Event e)) => null;

	addFormatterGoldens('Function with functon arguments', addEventListener);

	// Closure
	addGolden('dart:html method', window.addEventListener);

	// Get a reference to the JS constructor for a Dart class.
	// This tracks a regression bug where overly verbose and confusing output
	// was shown for this case.
	var testClass = new TestClass(17);
	var dartConstructor = js_util.getProperty(
	js_util.getProperty(testClass, '__proto__'), 'constructor');
	addFormatterGoldens('Raw reference to dart constructor', dartConstructor);
	});

	group('Object formatting', () {
	var object = new Object();
	addFormatterGoldens('Object', object);
	test('hasBody', () {
	expect(_devtoolsFormatter.hasBody(object, null), isTrue);
	});
	});

	group('Type formatting', () {
	addFormatterGoldens('Type TestClass', TestClass);
	addFormatterGoldens('Type HttpRequest', HttpRequest);
	});

	group('JS interop object formatting', () {
	var object = js_util.newObject();
	js_util.setProperty(object, 'foo', 'bar');
	// Make sure we don't apply the Dart custom formatter to JS interop objects.
	expect(_devtoolsFormatter.header(object, null), isNull);
	});

	group('Module formatting', () {
	var moduleNames = _debugger.getModuleNames();
	var testModuleName = "tests_lib_2_html_debugger_test/debugger_test";
	expect(moduleNames.contains(testModuleName), isTrue);

	addAllNestedFormatterGoldens(
	'Test library Module', _debugger.getModuleLibraries(testModuleName));
	});

	group('StackTrace formatting', () {
	StackTrace stack;
	try {
	throw new Error();
	} catch (exception, stackTrace) {
	stack = stackTrace;
	}
	addFormatterGoldens('StackTrace', stack);
	test('hasBody', () {
	expect(_devtoolsFormatter.hasBody(stack, null), isTrue);
	});
	});

	group('Class formatting', () {
	addNestedFormatterGoldens('TestClass', new TestClass(17));
	addNestedFormatterGoldens('MouseEvent', new MouseEvent("click"));
	// This is a good class to test as it has statics and a deep inheritance hierarchy
	addNestedFormatterGoldens('HttpRequest', new HttpRequest());
	});

	group('Generics formatting', () {
	addNestedFormatterGoldens(
	'TestGenericClass', new TestGenericClass<int, List>(42));
	addNestedFormatterGoldens(
	'TestGenericClassJSInterop',
	new TestGenericClass<ExampleJSClass<String>, int>(
	new ExampleJSClass("Hello")));
	});

	test('verify golden match', () {
	// Warning: all other test groups must have run for this test to be meaningful
	var actualStr = actual.toString().trim();

	if (actualStr != golden) {
	var helpMessage =
	'Debugger output does not match the golden data found in:\n'
	'tests/lib_2/html/debugger_test_golden.txt\n'
	'The new golden data is copied to the clipboard when you click on '
	'this window.\n'
	'Please update the golden file with the following output and review '
	'the diff using your favorite diff tool to make sure the custom '
	'formatting output has not regressed.';
	print(helpMessage);
	print(actualStr);
	// Copy text to clipboard on page click. We can't copy to the clipboard
	// without a click due to Chrome security.
	var body = document.body;
	TextAreaElement textField = new Element.tag('textarea');
	textField.maxLength = 100000000;
	textField.text = actualStr;
	textField.style
	..width = '800px'
	..height = '400px';
	document.body.append(new Element.tag('h3')
	..innerHtml = helpMessage.replaceAll('\n', '<br>'));
	document.body.append(textField);
	document.body.onClick.listen((_) {
	textField.select();
	var result = document.execCommand('copy');
	if (result) {
	print("Copy to clipboard successful");
	} else {
	print("Copy to clipboard failed");
	}
	});
	}
	expect(actualStr == golden, isTrue);
	});
	}